CAT3604HV4-T2 ON Semiconductor, CAT3604HV4-T2 Datasheet - Page 5

• Manufacturer Part Number: CAT3604HV4-T2
• Description: IC LED DRVR WHITE BCKLGT 16-TQFN
• Manufacturer: ON Semiconductor
• Type: Backlight, White LEDr

Specifications of CAT3604HV4-T2

• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 4
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.3MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-TFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 93%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: 3604HV4-TE13; CAT3604HV4-T2TR; CAT3604HV4-TE13; CAT3604HV4-TE13TR; CAT3604HV4-TE13TR

Basic Operation
it is able to drive the programmed LED current, it continues
in 1x mode. If the battery voltage drops to a level where the
LED current cannot be met, the driver automatically
switches into 1.5x mode. The 1.5x charge pump will boost
the output voltage accordingly to achieve the nominal LED
current.
the chip is powered up or is taken out of shutdown mode (via
EN pin). The use of the control pins (CTR0, CTR1, CTR2)
does not reconfigure the mode of operation.
LED Current Setting
connected between the RSET pin and ground. Table 5 lists
various LED currents and the associated R
for standard 1% precision surface mount resistors.
turn On or Off a combition of LEDs as shown in Table 6.
Short Circuit Detect/Disables
connecting the respective LED pins to VOUT. In which
case, the corresponding LED driver is disabled and the
typical LED sink current is only about 20 mA. When the
following equation is true on any channel, the driver turns
off the LED channel:
Note: The CAT3604 is designed to drive LEDs with forward
voltage greater than 1 V and is not compatible with resistive
loads.
At power-up, the CAT3604 starts operation in 1x mode. If
The operating mode is reinitialized each and every time
The LED current is set by the external resistor R
The digital control lines CTR0, CTR1 and CTR2 allow to
The unused LED channels can also be turned off by
VOUT * V
LED
v 1 V (LED channel OFF)
SET
resistor value
http://onsemi.com
SET
5
NOTE:
Table 5. RSET Resistor Selection
Table 6. LED Selection
CTR2
0
0
0
0
1
1
1
1
LED Current (mA)
Control Lines
1 = logic high (or VIN)
0 = logic low (or GND)
– = LED output OFF
CTR1
0
0
1
1
0
0
1
1
10
15
20
30
1
2
5
CTR0
0
1
0
1
0
1
0
1
LED4
ON
ON
–
–
–
–
–
–
LED3
LED Outputs
ON
ON
ON
–
–
−
–
–
R
SET
49.9
32.4
23.7
15.4
649
287
102
LED2
(kW)
ON
ON
ON
ON
–
–
–
–
LED1
ON
ON
ON
ON
–
–
–
–